United States Patent (19)
`Takahashi
`
`USOO5798841A
`Patent Number:
`11
`45 Date of Patent:
`
`5,798.841
`Aug. 25, 1998
`
`54) BOOK PAGE DOCUMENT IMAGE READING
`APPARATUS HAVING A PAGE TURNING
`MECHANISM
`
`75 Inventor: Hiroshi Takahashi, Kanagawa, Japan
`73) Assignee: Ricoh Company, Ltd., Tokyo, Japan
`
`21 Appl. No.: 565,296
`22 Filed:
`Nov. 27, 1995
`30
`Foreign Application Priority Data
`Nov. 28, 1994
`JP
`Japan .................................... 6-293549
`(51) Int. Cl. .............................. HO4N 1/04; H04N 1/40;
`H04N 1/393; GO3G 21100
`52 U.S. C. ......................... 358/296; 358/449; 358/451:
`358/498: 399/86: 399/362
`58) Field of Search ..................................... 358/296, 406.
`358/448, 449, 451, 471, 474. 488, 498:
`355/25. 77; 399/86. 362
`
`56)
`
`References Cited
`U.S. PATENT DOCUMENTS
`... 399,362
`4,696.563 9/1987 Shibusawa ...
`4,754.303 6/1988 Ito ............................................. 399,86
`5,006,895 4/1991 Hashimoto et al. .
`... 399/362
`5,010,371
`4/1991 Matsuo et al. ............................ 399,86
`5,061,962 10/199 Takahashi ...
`... 355/33
`5,115.254
`5/1992 Takahashi
`358/296 X
`5,260,805
`l/1993 Barrett .............
`...... 358/449
`5,325,213 6/1994 Takahashi et al.
`... 358/474
`5,390,033 2/1995 Bannai et al. ...
`... 358/498
`5,471.277 11/1995 Fujioka et al. .......................
`... 35S/25
`
`5,583,607 12/1996 Fujioka et al............................. 355/25
`5,583,662 12/1996 Takahashi et al. ...................... 358/474
`5,610,720 3/1997 Fujioka et al. .......................... 358/296
`5,625.466 4/1997 Nakajima ................................ 358/449
`FOREIGN PATENT DOCUMENTS
`Japan.
`/990
`2-2O880
`Japan .
`fgg)
`2-2.581
`Japan.
`Of 990
`2-24826.
`Japan .
`2-26,2762 Oy990
`Japan.
`2-301.461. 21990
`Japan .
`4-65259 37992
`6-284239 10/1994 Japan .
`6-314004 11/1994 Japan.
`Primary Examiner-Eric Frahm
`Attorney, Agent, or Firm-Oblon. Spivak, McClelland,
`Maier & Neustadt, P.C.
`57
`ABSTRACT
`A book page document image reading apparatus includes a
`page turning mechanism, a reading mechanism for reading
`an image of a spread book page document placed thereon
`with a binding section being aligned to a reference position.
`an image size changing mechanism for changing a size of a
`read image read by the reading mechanism, a storage
`mechanism for storing therein image data corresponding to
`an image size changing operation, and a mechanism for
`differentiating a range for storage of the image data having
`been subjected in the storage mechanism when a book page
`document is read with the same size from a range for storage
`of image data having been subjected to the image size
`changing operation in the storage mechanism when a book
`page document is read with a changed size.
`16 Claims, 50 Drawing Sheets
`
`
`
`-1-
`
`Amazon v. Audio Pod
`US Patent 9,319,720
`Amazon EX-1057
`
`

`

`U.S. Patent
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`Aug. 25, 1998
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`Aug. 25, 1998
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`Aug. 25, 1998
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`Aug. 25, 1998
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`Aug. 25, 1998
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`Aug. 25, 1998
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`Aug. 25, 1998
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`Aug. 25, 1998
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`Aug. 25, 1998
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`Aug. 25, 1998
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`Sheet 26 of 50
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`5,798,841
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`(mm) 40
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`Sheet 27 of 50
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`5,798,841
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`F/G, 31
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`-28-
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`5,798,841
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`FG.52
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`-29-
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`Sheet 29 of 50
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`5,798.841
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`U.S. Patent
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`Aug. 25, 1998
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`Sheet 30 of 50
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`5,798,841
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`FIG.54
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`DATA
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`-32-
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`U.S. Patent
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`Aug.25, 1998
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`Sheet 32 of 50
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`U.S. Patent
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`Sheet 34 of 50
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`5,798.841
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`Aug. 25, 1998
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`Sheet 35 of SO
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`5,798.841
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`Aug, 25, 1998
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`Widvd¥403903LIDg0g|INIT9199
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`DEEDLA
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`-37-
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`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 37 of 50
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`5,798,841
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`7174 LINE
`A MOC. 464
`SFCATE —
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`A. A.C. 476A
`WFGATE
`
`LEFT EDGE SECTION
`OF A PAPER
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`ALEFT PACE
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`CENTRAL BINDING SECTION
`RIGHT EDGE SECTION
`OF A PAPER
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`3307 LINE
`A. A.C. 474O —
`REFERENCE FOR A LEFT
`I
`EDCE OF A PAPER
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`307 LINE
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`AAC. 42A
`REFERENCE FOR A -
`CENTER OF A PAPER
`A VC. 472A
`REFERENCE FOR A RIGHT -
`EDGE OF A PAPER
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`:
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`BRIGHT PAGE
`AAC. 44A
`REFERENCE FOR A LEFT
`EDGE OF A PAPER
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`307 LINE
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`I
`I
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`li
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`307 LNE
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`3507 LINE
`At AC. 436
`REFERENCE FOR A — —
`CENTER OF A PAPER
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`REFERENCE FOR A RIGHT
`EDGE OF A PAPER
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`3307 LINE
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`-38-
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`U.S. Patent
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`Aug. 25, 1998
`
`Sheet 38 of 50
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`5,798.841
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`QNIYOQS JQ) ?— w
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`-39-
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`U.S. Patent
`U.S. Patent
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`Aug, 25, 1998
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`Sheet 39 of 50
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` ANOMSJO¥d
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`JQOWOv3Y
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`5,798,841
`5,798,841
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`ALEDLT
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`-40-
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`-40-
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`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 40 of 50
`
`5,798,841
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`F1 G, 48A
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`
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`Bound Mono:
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`F/G, 43D
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`Memory fonge for exponsion Over
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`-41-
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`

`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 41 of 50
`
`5,798.841
`
`FIG.49
`
`
`
`When power turned ON 2
`
`
`
`
`
`YES
`
`Copy format key ON ?
`
`
`
`Copy format
`Counter |
`1
`
`Copy format counter
`
`YES
`
`
`
`
`
`Copy format Counter
`
`Copy format
`Counter -->
`
`Copy format
`Counter -->
`
`
`
`
`
`(1) Independant page
`mode
`ON
`LED
`LED 2 OFF
`
`
`
`
`
`(2 Spread page mode
`LED 1 OFF
`LED 2 ON
`
`Copy format set
`
`E n d
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`-42-
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`

`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 42 of 50
`
`5,798.841
`
`READ MODE
`
`PACE TURN MODE
`
`DOWN
`
`A MC. 6O4
`PRINT ON
`
`SCANNER
`MOTOR
`
`v
`
`AAC. 6 OA
`EDGE SECTION DETECTION PERIOD
`AUXILARY SCANNING
`DIRECTION
`
`AAC. 6 OC
`MAN SCANNING
`DIRECTION
`
`A WO. 4 OA
`FuoRISON A.P.
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`CENTRAL BINDING SECTION
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`PAGE
`
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`REGULAR
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`DIRECTION
`PAGE
`RUNNING
`DISCHARGE
`IN REVERSE
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`DELECTION OF RIGHT
`DETECTION OF UPPER DIRECTION
`EDGE SECTION
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`ON
`POSITION OF AN EDGE SECTION
`ON
`A MC. 1 O/
`READ MODE
`"RR -
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`-43-
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`

`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 43 of 50
`
`5,798,841
`
`FIG 51
`
`
`
`Left document
`bOSe
`
`Page turn
`
`Poge turn
`
`Imoge memory ronge
`
`
`
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`a 100%
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`
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`
`Center of
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`
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`
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`
`s
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`
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`
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`
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`
`--Surplus memory
`
`141%
`Memory ronge When exponded(minimum)
`- - -
`Memory forge Copy with some size
`/When contracted
`
`-44-
`
`

`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 44 of 50
`
`5,798,841
`
`FIG.55
`
`nickness of a book
`MO
`
`-- 6mm
`
`210 224.5
`
`O
`
`O
`
`Thickness of a book
`30
`
`FIG.54
`
`O
`
`210
`
`-45-
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`

`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 45 of 50
`
`5,798,841
`
`FIG.S.
`
`Thickness of a book
`30
`
`O
`
`148
`
`FIG.56
`
`Thickness of a book
`3O
`
`O
`
`128
`
`-46-
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`

`

`U.S. Patent
`
`Sheet 46 of 50
`Aug. 25, 1998
`FIG.57
`
`5,798.841
`
`Thickness of a book
`20
`
`O
`
`210
`
`FG.58
`
`Thickness of a book
`1 O
`
`O
`
`2O
`
`F.G.9
`
`Thickness of a book
`3O
`
`O
`
`182
`
`-47-
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`

`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 47 of 50
`
`5,798.841
`
`AAC. 6 O4
`SCANNER MOTOR
`
`READ MODE
`
`PACE SUCKING
`V
`
`. . . IN
`
`CENTRAL BINDING SECTION
`
`PAGE TURN MODE
`
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`RUNNING IN
`REVERSE
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`
`At AC. 6 OA
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`
`A. A.C. 6 OC
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`
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`
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`MEMORY W
`
`LEFT PAGE
`
`RIGHT PACE
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`ON
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`WRITE MODE
`
`ON
`
`ON
`
`MEMORY R - Pll-O
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`VOIOR FOR LEFT - -
`DOCUMENT BASE
`DOWN
`
`A. A.C. 6 OA
`MOTOR FOR RIGHT
`DOCUMENT BASE
`
`PRESSURE
`
`DOWN
`
`-48-
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`

`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 48 of 50
`
`5,798,841
`
`F/G, 6 f
`
`DOCUMent
`
`Copy with
`Some size
`7
`
`Poper
`A 3
`
`REGIST --
`Memory ronge Expansion(Minimum)
`- - - - ,
`Memory range
`Copying with Some size
`o Controction
`
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`
`DOCUment
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`
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`
`Poper 2
`
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`
`- - -
`
`-49-
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`

`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 49 of 50
`
`5,798.841
`
`F/G, 63
`
`
`
`DOCument
`
`Memory Oreo
`
`Bonk (when bound at a Center)
`
`-50-
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`

`

`U.S. Patent
`
`Aug. 25, 1998
`
`Sheet 50 of 50
`
`5,798.841
`
`FIG. 64
`
`Size change rate received
`S2
`
`Same size or less
`
`NO
`
`S1
`
`YES
`
`S3
`
`also
`
`Command received
`
`YES
`
`
`
`a page detected
`
`YES
`
`
`
`Discharged
`page detected
`?
`YES
`Page size Computed -- P
`
`S5
`
`S6
`
`S9
`
`
`
`
`
`
`
`SO
`
`YES
`
`S4
`
`Agg transmission
`outside the Memory range
`
`S12
`
`Image formation sttoped
`
`Processing
`by main controller
`
`S13
`
`-51-
`
`

`

`1.
`BOOK PAGE DOCUMENT MAGE READING
`APPARATUS HAVING A PAGE TURNING
`MECHANISM
`
`5,798.84
`
`FIELD OF THE INVENTION
`The present invention relates to a book page document
`image reading apparatus.
`BACKGROUND OF THE INVENTION
`In the conventional type of digital copying machine, a
`document is scanned and read, and the read image data is
`stored in a storage means, and a storage start position for the
`read data in this storage means is regarded as a fixed position
`corresponding to an upper stream side for reading and
`scanning. Also Japanese Patent Laid-Open Publication
`No.268434/1993 discloses a duplex copying apparatus in
`which a storage device for storing either one of the right and
`left pages in a spread document is provided and a an image
`of a page in the next or previous spread page stored in the
`storage device and an image of a page related as a top or a
`rear page to the stored page image are copied on both top and
`rear surfaces of a sheet of recording paper simultaneously. In
`this duplex copying apparatus, an image storage area in
`storage device changes, but a position of a document is
`fixed, and to store images of document having different sizes
`at a standard position for each size of document, setting a
`spread document at an accurate page position is required.
`For this reason, it is essentially required to provide an input
`means for inputting a document size and decide an image
`storage range in a storage device according to a document
`size or to decide an image storage range in a storage device
`according to a document size by automatically determining
`a position of the document.
`There is no book page image document reading apparatus
`based on the conventional technology which can read an
`image of a book page, a corner or an edge section of which
`is not aligned to the respective reference position when
`placed on a document base and changes a size of the image
`thereof. There is a copying machine which can automatically
`detect a size of a document and select a form for copying the
`document thereon.
`In a book page document image reading apparatus for
`reading an image of a book page. in a case where a document
`of spread book pages is placed on a document base aligning
`the central binding position to the reference point and an
`image of a spread of book pages is read from an edge section
`of one of the pages and then the read image data is stored in
`an image memory, a range of an image data storage range in
`an image memory when an image is read with a multiplied
`size is limited due to a limited capacity of the image
`memory, and sometimes, a portion of an image to be read is
`lacked because image data for edge sections of an image to
`be read is lost in the read image data. When a portion of an
`image to be read is lacked, sometimes the output data is
`rather unpleasant to see when the image data is outputted
`from the image memory to a printer or the like and the image
`is formed.
`As a document size is automatically detected in a case of
`the copying machine as described above, it is conceivable
`that it is also possible in a case of a book page document
`image reading apparatus to automatically detect a size of a
`book page document and decide an image data storage range
`in an image memory according to the detected book page
`document size. However in this case, a precision in book
`page document size detection is low and affected by each
`book page document, and sometimes it is difficult to detect
`
`15
`
`25
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`35
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`45
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`50
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`55
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`65
`
`2
`a size of a book page image because a book page document
`may include graphics or due to a gap at an edge section of
`the book page document. Also when automatically and
`continuously copying a plurality sheets of book page
`document, different from a case where a sheet document is
`copied, generally it never occurs that a portion of a book
`page image is copied, and for this reason it is extremely
`difficult to detect a size of a book page document.
`Furthermore, a size of a book page document is generally
`not a fixed one, so that it is difficult to determine the size.
`Also in the book page document image reading apparatus
`for reading an image of a book page document, if a book
`page document is placed on a document base with the central
`binding section being aligned to the reference position, an
`image of the spread book page document is read from one
`page edge section, and the read image data is stored in the
`image memory, an image data storage range in the image
`memory is limited due to a capacity of the image memory.
`and sometimes image data for an edge section of the read
`image is lacked from the read image data.
`Namely, in the image memory a position for starting
`storage of read image is a fixed position corresponding to the
`upstream side in the reading/scanning direction. However, a
`position of a page of a spread book page document displaces
`in association with page turning, so that a position where the
`read image data is stored in the image memory changes and
`sometimes the read image data can not be stored within a
`prespecified image data storage range, and for this reason
`sometimes a portion of the read image is lacked. In a case
`where a portion of read image data is lacked, when the image
`data is outputted to a printer for forming the image on a
`form, the form may become unpleasant to see.
`As a size of a document is automatically detected in the
`copying machine as described above, it can be considered
`that a document size may automatically be detected and an
`image data storage size in the image memory may automati
`cally be decided according to the detected book page docu
`ment size. However, this case, precision in detection of the
`book page document size is low and the precision is affected
`by a type of the book page document in such a case as that
`where, for instance, the book page document includes
`graphic pages and a step is generated between edge sections
`of each page, and in that case it is difficult to detect a size
`of a book page document accurately. Also in a case where a
`plurality of pages of a book page document are automati
`cally copied, different from a case where a sheet document
`is copied, it seldom occurs that only a portion of a page
`image of the book page document is copied, so that detection
`of the book page document size is quite difficult.
`Furthermore, a percentage of book page document having
`irregular size is substantially high, which also makes it
`difficult to accurately determine a size of a book page
`document.
`
`SUMMARY OF THE INVENTION
`It is an object of the present invention to provide a book
`page document image reading apparatus which can solve the
`problems as described above and can prevent lacking a
`portion of an image to be read when read with an enlarged
`size or generation of unpleasant images to see. Also it is
`another object of the present invention to improve the
`problems described above and to provide a book page
`document image reading apparatus for insuring a range for
`storage of image data in a storage means regardless of
`displacement of a position of pages in a spread of book
`pages.
`
`-52-
`
`

`

`5,798.84
`
`10
`
`5
`
`20
`
`25
`
`3
`In the present invention, a reading means reads an image
`of a spread of book pages placed aligning a central binding.
`section thereof to the reference position from an edge
`section of one of the pages, and an image size changing
`means changes a size of an image read by the reading means.
`The read image data after size change is stored in a storage
`means, and a range for storing image data in this storage
`means when a book page document is read with the same
`size is different from a range for storing image data in the
`storage means when a book page document is read with a
`changed image size.
`In the present invention, a reading means reads an image
`of a spread of book pages placed aligning a central binding
`section thereof to the reference position from an edge
`section of one of the pages, and an image size changing
`means changes a size of an image read by the reading means.
`The read image data after size change is stored in a storage
`means, and a position where storage of the image data after
`size change is started in this storage means is decided
`according to an image size change factor when a book page
`document is read.
`In the prevent invention, the reading means read an image
`of a spread of book pages, and an image size changing
`means changes a size of an image read by the reading means.
`The image data after size change is stored in a storage
`means, and a warning means generates an warning when a
`range for storage of image data after size change in the
`storage means is out of a prespecified range, or when a range
`for reading image data from the storage means is out of a
`prespecified range.
`In the present invention, the reading means reads an
`image of a spread of book pages, the read image data is
`stored in the storage means, and if the image data is read out
`from the storage means and the outputted address is out of
`a prespecified range, blank data is outputted.
`In the present invention, the reading means reads an
`image of a spread of book pages, and the image size
`changing means changes a size of the image read by the
`reading means. The image data after size change is stored in
`the storage means, and an output means outputs the image
`data read from the storage means. A page turning means
`turns pages of a spread of book pages, and a range for
`storage of the image data in the storage means when the
`image size is changed is computed by a computing means.
`A page size of the book page document is detected by a page
`size detecting means, and a comparing means compares the
`page size detected by the page size detecting means to a
`range for storage of image data computed by the computing
`means when the image size is changed.
`In the present invention, the reading means reads an
`image in a spread of book pages from an edge section in one
`page of the spread documents, and the page turning means
`turns pages of the book page document from an edge section
`in the other page of the book documents. The read image
`data is stored in the storage means, and suppress of an image
`data storage range is located in an edge section of the page
`turning side.
`In the present invention, the reading means reads an
`image in a spread of book pages, the page turning means
`turns pages of a book page document. The storage means has
`a storage capacity which corresponds a size of 2 or more
`pages in a case of maximum allowable page size of a book
`page document, and at the same time to a size of 2 maximum
`allowable page of a book page document plus a size for a
`65
`maximum thickness of a book or less and stores the read
`image data therein.
`
`35
`
`45
`
`50
`
`55
`
`4
`In the present invention, the reading means reads an
`image in a spread of book pages from an edge section in one
`page of the book documents, and the page turning means
`turns pages from an edge in the other page of the book
`documents. The read image data is stored in the storage
`means, and a position of an edge section in a spread of book
`pages is detected by the page edge section detecting means
`when page is turned. After the position of a page edge
`section in a spread of book pages has been detected. a start
`point of storage for image data in a spread pages in the
`storage means is decided by a detecting signal from the page
`edge section detecting means.
`Other objects and features of this invention will become
`understood from the following description with reference to
`the accompanying drawings.
`BRIEF DESCRIPTION OF THE DRAWTNGS
`FIG. 1 is a block diagram showing circuit configuration in
`an example of a book page document image forming appa
`ratus in which the present invention is applied;
`FIG. 2 is a block diagram showing data processing flow
`blocks in this apparatus;
`FIG. 3 is a cross-sectional view showing an image reading
`section in the apparatus;
`FIG. 4 is a cross-sectional view showing a page turning
`section in the apparatus;
`FIG. 5 is a schematic view showing a state in which a scan
`unit in the apparatus is scanning a book page document;
`FIG. 6 is a schematic view showing a state where a
`direction of scanning by the scan unit in the apparatus is
`reversed;
`FIG. 7 is a schematic view showing a state where a page
`is being turned and scanned by the scan unit in the apparatus;
`FIG. 8 is a schematic view showing a state where the scan
`unit in the apparatus is scanning other book page document;
`FIG. 9 is a schematic view showing a state where a page
`is being turned and scanned by the scan unit in the apparatus;
`FIG. 10 is a schematic view showing a state where other
`page is being turned and scanned by the scan unit in the
`apparatus;
`FIG. 11 is a cross-section view showing outline of the
`scan unit;
`FIG. 12 is a perspective view showing a document base
`in the apparatus;
`FIG. 13 is a cross-sectional view showing a portion of the
`apparatus where a book page document is placed;
`FIG. 14 is a perspective view showing a document base
`pressurizing/fixing switching device and a document base
`saving device in the apparatus;
`FIG. 15 is a cross-sectional view showing the document
`base pressurizing/fixing switching device and the document
`base saving device in the apparatus;
`FIG. 16 is a perspective view showing a control pulley of
`the device above:
`FIG. 17 is a perspective view showing a portion of the
`document base pressurizing/fixing switching device and a
`portion of the document base saving device;
`FIG. 18 is a side view showing other portions of the
`document base pressurizing/fixing switching device as well
`as of the document base saving device;
`FIG. 19 is a cross-sectional view showing a state where
`the above device has saved the document base;
`FIG. 20 is a flat view showing a state where the device
`above has saved the document base:
`
`-53-
`
`

`

`5,798.841
`
`5
`FIG. 21 is a timing chart showing an operation of the
`device above for saving the document base:
`FIG. 22 is a schematic view showing a state where
`scanning by the scan unit starts and a state where scanning
`by the scan unit ends;
`FIG. 23 is a schematic view showing a state where
`scanning of a book page document by the scan unit starts:
`FIG. 24 is a schematic view showing a state where the
`scan unit is Scanning a central portion of a book page
`document;
`FIG. 25 is a schematic view showing a state where the
`scan unit is above a right page of a spread book page
`document;
`FIG. 26 is a schematic view showing a state where a
`direction of scanning by the scan unit is reversed;
`FIG. 27 is a timing chart showing operations of the scan
`unit;
`FIG. 28 is a perspective view showing a state where a
`document base in the apparatus has been set;
`FIG. 29 is a perspective view showing a state where the
`document base in the apparatus has been drawn out;
`FIG. 30 is a view showing an example of a relation
`between a number of turned book pages and a displacement
`rate of a page position;
`FIG. 31 is a view showing a signal waveform detected at
`a right edge section of a book page document;
`FIG. 32 is a block diagram showing a circuit for detection
`of an image of an edge section of a book page document in
`the auxiliary scanning direction in the apparatus;
`FIG.33 is a view showing a detected signal waveform of
`an edge section of a book page document in the main
`scanning direction;
`FIG. 34 is a block diagram showing a circuit for detection
`of an image of an edge section of a book page document in
`the main scanning direction in the apparatus;
`FIG. 35 is a cross-sectional view showing an image
`forming section in the apparatus; FIG. 36 is a view showing
`a reference for setting a book page document in the appa
`ratus:
`FIG. 37 is a cross-sectional view showing a portion of a
`turned page accommodating section in the apparatus;
`FIGS. 38A and 33B are flat views showing a portion of an
`operating section in the apparatus;
`FIGS